Respect given withinSpan parameter also in queries for examples

Change-Id: I4451f173553559c76a868aca5aa65f020827f101
diff --git a/R/collocationAnalysis.R b/R/collocationAnalysis.R
index d933e83..edc427d 100644
--- a/R/collocationAnalysis.R
+++ b/R/collocationAnalysis.R
@@ -199,7 +199,7 @@
                 result$collocate,
                 leftContextSize = leftContextSize,
                 rightContextSize = rightContextSize,
-                withinSpan = ""
+                withinSpan = withinSpan
               )
               result$example <- findExample(
                 kco,